KR100303017B1 - Gas hose with copper wire for electric signal transmission, gas supply system with it, and method for preventing leakage of gas using facilities. - Google Patents

Abstract

The present invention provides a gas supply system for preventing the accumulation of gas in the room where the gas use facility is installed by blocking the gas in the vicinity of the gas supply when the gas leaks, and a method for preventing leakage of the gas use facility For the purpose of Moreover, an object of this invention is to provide the gas hose provided with the conductor which can be connected easily from a gas use facility to an external gas shutoff valve. The gas supply system which concerns on this invention is connected to the external gas supply source, The gas shutoff valve which passes a gas according to an electrical signal; A gas hose having one or more ends connected to the gas shutoff valve and having one or more conductors embedded therein; And a gas use facility connected to the other end of the gas hose and outputting an electrical signal for the operation of the combustor to the conductor of the gas hose. The hollow gas hose according to the present invention has a conductor extending in the gas hose longitudinal direction on the circumferential side so as to transmit an electrical signal. According to the gas supply system of the present invention, the leakage of gas is blocked at the gas source side to prevent a fire or explosion accident that may occur due to the accumulation of gas in the room. In addition, since the copper wire is built in the gas hose, there is an advantage that can easily connect the gas use facility and the gas shutoff valve.

Description

A gas hose having a copper wire for electric signal transmission, a gas supply system having the same, and a method for preventing leakage of a gas using facility.

The present invention relates to a gas hose for supplying gas from a gas supply source to a gas facility, a gas supply system having the same, and a method for preventing leakage of the gas facility. Specifically, the present invention relates to a gas hose having a conductor capable of conducting an electrical signal therein, a gas supply system having the same, and a method for preventing leakage of a gas using facility using the same.

Definition of Terms

Hereinafter, the term "outside" refers to a location where a gas source is installed, either outdoors or indoors. These locations are usually well ventilated and do not cause an accident even if there is a gas leak. That is, the term "external" is used to refer to the vicinity of the gas source in the path from the gas source to the gas facility. For example, the place where a propane gas container is installed, the vicinity of a gas supply pipe, the gas pipe which enters into an apartment interior, etc. are interpreted as included in the term "external" described below.

In addition, the term "gas" hereinafter refers to all gaseous fuels capable of generating heat through combustion. The most commonly used gas is liquefied natural gas or liquefied petroleum gas, but in the present specification, other gases such as air containing volatilized gasoline, diesel impregnated air, hydrogen, methane, ethane, etc. are also used in the industrial field. It is interpreted as being included in the term ".

On the other hand, the term "gas source" includes all sources for supplying gaseous fuel. Commonly used "gas sources" include, for example, gas pipes for supplying liquefied natural gas or liquefied petroleum gas, or compression vessels containing fuel.

Prior art

In general, a gas hose made of vinyl chloride is used to supply gas from an external gas supply source to a gas use facility such as a gas boiler or a gas range. These hoses are made of vinyl chloride, which does not dissolve in gas or cause chemical reactions by connecting pipes and gas facilities or containers and gas facilities. These gas hoses are fixed by means of hose bands that prevent the gas from leaking by tightening the hoses to the parts connecting the gas facility.

On the other hand, the gas leakage blocking device is used to detect the leakage of gas due to accidental shut-off of the combustor of the gas use facility or aging of the connection portion. The gas leakage shutoff device has a gas leakage shutoff device that has a function of shutting off the gas (overflow blocking function) and checking a leak (leak check function) when a larger amount of gas flows than the prescribed flow rate, Gas leak alarm shutoff device is used to detect the leaked gas and shut off the gas passage while generating an alarm.

However, in spite of the installation of the gas leak alarm shutoff device, there is a case where the gas leaks due to malfunction or misplacement of the alarm shutoff device. This sometimes causes gas accidents, which cause many casualties and property losses every year. In order to compensate for this, in recent years, a leakage preventing device that checks the operation of the combustor in the gas using facility and automatically shuts off the gas inside the gas using facility when combustion does not occur is used. However, despite the use of such a technology, gas accidents are caused by contamination or failure inside the gas facility. In addition, when there is a problem in the part (gas hose, connecting pipe, etc.) connecting from the gas pipe to the gas facility, there is a problem that a gas accident may occur even if the leakage preventing device works properly.

In general, gas-use facilities used in homes and industrial sites are connected to gas sources that are installed outdoors or indoors with good ventilation. Therefore, even if a leak occurs near the gas source, it is rarely connected to an accident, whereas in a room where a gas use facility is installed, the gas accumulates when the gas leaks. If the accumulated gas is ignited, a fire or explosion may occur. Given this, it is desirable to shut off the gas near the gas source rather than the gas facility when a gas leak is detected. However, in order to shut off the gas in the vicinity of the gas source, it is not widely used at present because it is necessary to connect an electric wire that can transmit a signal about the operating state of the gas facility from the gas facility to the gas source at a relatively long distance. .

1 exemplarily shows a gas supply system used conventionally. In the gas range 5, which is a gas use facility, a gas supply source is connected to the gas pipe 9 by means of a gas hose 7. The intermediate | middle valve 4 is provided in the gas pipe 9, and when the gas range 5 is not used, the intermediate | middle valve 4 is normally closed and gas supply is interrupted | blocked. In addition, Figure 2 is a perspective view of a gas hose used in the prior art, the center is empty, the gas is delivered there.

An object of the present invention is to provide a gas supply system that overcomes the above problems, and a method for preventing leakage of a gas using facility.

In addition, the present invention provides a gas supply system for preventing the accumulation of gas in the room where the gas use facility is installed by blocking the gas in the vicinity of the gas supply when the gas leaks, and a method for preventing leakage of the gas use facility It aims to provide.

Moreover, an object of this invention is to provide the gas hose provided with the conductor which can be connected easily from a gas use facility to an external gas shutoff valve.

1 is a schematic diagram of a conventional gas supply system connected to a gas pipe through a gas hose.

FIG. 2 is a perspective view of a conventional gas hose used in the gas supply system as shown in FIG. 1.

3 is a schematic diagram of one embodiment of a gas supply system according to the present invention.

4 is a schematic diagram of a controller provided in the gas facility of FIG.

5 is a cross-sectional view of an embodiment of a gas hose according to the present invention.

6 is a cross-sectional view of a gas shutoff valve used in the gas supply system of FIG. 3.

7 is a perspective view of another embodiment of a gas hose according to the present invention.

8 is a side view of the gas hose of FIG. 5 or 7.

9 is a diagram of a connection of the controller of FIG. 4 connected to a gas hose and the conductors contained therein.

10 is a perspective view illustrating a gas hose connected to a gas cylinder according to the present invention.

Explanation of symbols used in the main part of the drawing

4: intermediate valve

5: gas facility 9: gas pipe

8a, 8b, 8c: combustor

11: controller 12: gas hose

15: gas shutoff valve 17a, 17b, 17c: thermoelectric element

26a, 26b, 26c: diode

32: bias spring 34: seat

35: housing 37: plunger

39: solenoid

Such an object of the present invention is a gas shutoff valve connected to an external gas supply source and configured to allow gas to pass in accordance with an electrical signal; A gas hose having one or more ends connected to the gas shutoff valve and having one or more conductors embedded therein; And a gas use facility connected to the other end of the gas hose and outputting an electrical signal for the operation of the combustor to the conductor of the gas hose.

In addition, the object of the present invention described above is achieved by a hollow gas hose having a conductor extending in the gas longitudinal direction on the circumference side so as to transmit an electrical signal.

Preferably, the gas hose described above receives a signal from the gas facility through a conductor embedded therein, and the gas shutoff valve is supplied from an external source when the combustor inside the gas facility is not operated. Block it. In the present invention, since the wire is provided in the gas hose, the control signal from the gas use facility can be directly transmitted to the gas shutoff valve without a separate wire or a remote transmission device. At least one conductor of the gas hose is provided and preferably two are provided. In the case where a pair of conductors are provided, they may be placed opposite each other on the outer circumference of the gas hose and installed parallel to the outer circumference of the gas hose, or may be located on the outer circumference of the gas hose and spirally installed on the outer circumference of the gas hose . In the case of installing in a spiral manner, the amount of deformation of the conductor is smaller with respect to the same bending angle of the gas hose as in the case of installing in a parallel manner. In the case where two or more conductors are provided, it is preferable that they are disposed so as to be conformal on the circumference in order to avoid signal interference or the like. For example, in the case where a pair of conductors is provided, it is preferable that the conductors are installed so as to be opposite to each other in any cross section.

Preferably, the conductor is copper wire of high purity. High purity copper wire has high toughness and ductility, so that it can be flexibly bent along the bending of the gas hose. In addition, when the gas hose is elongated, it is unclear which conductor should be connected to where, so that an indication for indicating the position of the conductor may be provided on the outer surface of the gas hose.

Preferably, the gas hose is a synthetic resin, and the electric wire is surrounded by the synthetic resin. The said synthetic resin uses resin which is non-conductive. This non-conductive resin eliminates signal interference between one or more conductors embedded in the gas hose.

The conductor is preferably a metal, preferably a metal with high toughness and ductility, even more preferably a copper wire of high purity. Copper wire is excellent in toughness and ductility, and is also suitable for the gas hose of the present invention because of its high electrical conductivity.

Preferably, the combustor of the gas utility facility is provided with a sensor, which provides a signal to the gas shutoff valve via a conductor of the gas hose as to whether the gas is combusting in the combustor. Preferably, such a signal is preferably a signal of low voltage and current. If necessary, an amplifier may be provided for amplifying the signal of the sensor. The sensor is a temperature sensor for sensing the heating state of the combustor, preferably a sensor which generates a current when heated, particularly preferably a thermoelectric element. In the case of thermoelectric devices, both K-type and E-type can be used, but it is preferable to use E-type with strong electromotive force.

Preferably, the gas facility includes a sensor attached to a combustor, a controller for processing an electrical signal, a wire for transmitting the signal of the sensor to the controller, and a start switch connected to the controller for operating the combustor. . The control unit includes an electrical circuit for processing the electrical signal. The start switch may be integrally formed with the control unit.

The control unit may operate using a signal of the sensor as a voltage source, but may operate with a current supplied through a small battery or an adapter. Most gas service facilities, such as gas boilers, which are used in recent years, are connected to a 110V / 220V power source, so that the rectified and converted current can be used as a power source. Preferably, the controller is provided with a reverse current prevention means for blocking the reverse current. If the signal of the sensor has a sufficient intensity, it is not necessary to amplify the signal, but if the signal of the sensor is weak or the length of the gas hose is likely to be lost signal to amplify the electrical signal to the control unit An amplifier can be provided.

Preferably, the gas shutoff valve is operated by the electric current of the electric signal, and shuts off the gas in the absence of the electric signal. When the temperature of the sensor installed in the combustor rises, the gas shutoff valve is kept open by a signal transmitted from the sensor. However, when the temperature of the sensor falls, the signal of the sensor disappears, so that the signal is transmitted to the gas shutoff valve. Disappears or weakens, the gas shutoff valve shuts off the gas. However, when the gas operating facility is initially operated, the gas shutoff valve is kept open since the start switch or the control unit transmits a signal to the gas shutoff valve.

The gas shutoff valve may be any type of solenoid valve known in the art, but preferably, a solenoid forming a magnetic field in accordance with the electrical signal, a magnetic rod cooperating with the solenoid, a plunger connected to the rod of the permanent magnet, A housing in which the solenoid, the magnetic rod and the plunger are built in, and a seat having a shape corresponding to the plunger is formed on the inner surface thereof, and when the solenoid is not subjected to an electrical signal, the plunger is seated on the seat to close the valve. It is provided with an elastic means for biasing. The plunger also moves along the centerline of the gas shutoff valve. The magnetic body may be a permanent magnet or another solenoid capable of applying a force by interacting with the solenoid.

The gas facility may be a gas range using gas as a fuel, a gas boiler, a welding device, or an engine of an automobile.

In addition, the method for preventing the leakage of the gas use facility of the present invention, the step of transmitting a signal on whether the operation of the combustor provided in the gas use facility to the control unit; Processing the signal by the controller and transferring the signal to a gas hose in which a conductor is embedded; And opening and closing a gas delivered to the gas using facility based on a signal transmitted by the conductor.

Preferably, a signal is output from the gas facility when the combustor is operating and no signal is output when the combustor is turned off. In addition, the step of opening and closing the gas is preferably achieved by a gas shutoff valve containing a solenoid. Such a gas shutoff valve opens a passage to pass gas when there is a signal from the outside, but shuts off the gas when there is no signal. However, when operating the combustor, the controller outputs a signal to the gas shutoff valve through the conductor of the gas hose.

In addition, a fuse may be installed between the conductor of the gas hose and the gas using facility in order to prevent an electric current leaked from the outside from being delivered to the gas using facility through the conductor of the gas hose. Can be. This fuse prevents an accidentally shorted current from breaking before passing on the conductor to the gas hose and affecting the gas facility.

Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments.

3 shows a gas supply system according to an embodiment of the present invention. The gas vehicle 5 includes three combustors 8a, 8b and 8c, thermoelectric elements 17a, 17b and 17c attached to the combustor, a control unit 11 and a start switch 25 connected to the control unit 11. Equipped. The above-mentioned thermoelectric elements 17a, 17b, 17c are connected to the control unit 11 via electric wires 21a, 21b, 21c, 23. The thermoelectric elements each output an electrical signal when the corresponding combustor is activated and the temperature is high, but does not output an electrical signal when the temperature is lowered due to the combustor being inadvertently or intentionally turned off. Therefore, in the present embodiment, when the temperature of the combustor is high, the gas shutoff valve 15 connected to the gas pipe 9 having the shutoff knob 11 is opened to continuously supply gas, but when the temperature of the combustor drops, the gas shutoff valve 15 is closed and gas supply is stopped.

However, when the start switch 25 is pressed to operate the combustor, an operation signal enters the control unit 11 through the wires 27a and 27b, and the control unit 11 passes through the gas shutoff valve 15 through the copper wire of the gas hose 12. ) Will send an electrical signal. Therefore, when operating the combustor, the gas shutoff valve 15 is opened and gas is supplied to the combustor through the distribution valve 13.

4 schematically shows a control unit 11 for an embodiment of the invention. In the signal transmitted from the thermoelectric element, all the signals of the cathode enter the control unit 11 by joining the wire 23, and the signal from the anode of the thermoelectric element enters the control unit 11 through the wires 21a, 21b, 21c. . Wires 21a, 21b, 21c are connected to diodes 21a, 21b, 21c, respectively, to prevent the flow of reverse current. The current from the diode is connected to the connection terminals 10a and 10b as shown in FIG. 9 via a circuit in the control unit 11. On the other hand, the gas pipe 13 is connected below the control part 11, and supplies the gas delivered from the gas hose 12 to the combustor 8a, 8b, 8c. Although the amplifier is not used in this embodiment, when the signal from the thermoelectric element is not sufficient, the signal can be amplified by the amplifier and output to the connection terminals 10a and 10b. In addition, the signal of the start switch 25 is connected to the circuit lines which have been joined after passing through circuit lines and diodes connected to the cathodes of the thermoelectric elements, respectively, in the circuits of the control unit 11 via the wires 27a and 27b. The starting position 25 has a DC power source, and when the start switch 25 is pressed, current is applied from the start switch 25 to enter the control unit via the wires 27a and 27b. In this embodiment, an E-type thermoelectric element was used.

5 shows a cross-sectional view of a gas hose 12 according to one embodiment of the invention. In this cross section, a pair of copper wires 18 and 19 are embedded in the circumference of the gas hose 12. One end of copper wire 18a, 19a is connected to the terminal 10a, 10b of the control part 11, and the other end 18b, 19b is connected with the solenoid of the gas shutoff valve 15. As shown in FIG. The outer surface of the gas hose 12 is marked at the position where the copper wire is built, so that the polarity of the copper wire can be easily understood at each end.

6 is an embodiment of a gas shutoff valve 15 according to the present invention. The gas shut-off valve 15 is a product that is already sold in the market, specifically, a magnetic strip or permanent magnet rod 32, the solenoid 39 surrounding the permanent magnet rod 32, the solenoid 39 and the copper wire The wires 31 and 33 to be connected, the plunger 37 provided at one end of the permanent magnet rod 32, the seat 36 having a shape corresponding to the plunger 37, and the plunger 37 are closed (in the drawing). Compression spring 36 for biasing to the left), and housing 35 containing these elements. The above-mentioned permanent magnet rod 32 is set in polarity to move to the right by the action of the magnetic field generated when the current is applied to the solenoid 39. The compression spring 36 may seat the plunger 37 on the seat 36 when no signal is applied through the wires 31, 33, and the plunger 37 when the signal is applied through the wires 31, 33. ) Should have adequate inflation force to push the sheet 36 out of the seat 36. The number of turns of the solenoid 39, the strength of the permanent magnet, and the strength of the electric signal are preferably normalized in advance. In the figure, the left side is connected to the gas hose 12, and the electric wires 31 and 33 are connected to the copper wires 18b and 19b of the gas hose 12, respectively.

7 is a schematic diagram of a gas hose 12 'according to another embodiment of the present invention. In this embodiment, the copper wires 18 and 19 are wound around the gas hose 12 'while having a 180 degree phase. When the copper wires 18 and 19 are spirally wound in this manner, the copper wires are spread over a larger area, so when a predetermined portion of the gas hose is broken, the copper wire of the corresponding portion is also disconnected, and the gas shutoff valve is automatically closed. It can be done.

8 shows a side view as seen from one end of the gas hose according to FIG. 5 or 7. As can be seen from the figure, the copper wires 18a and 19a are provided on opposite sides of the circumference of each other, so as to prevent the connection from occurring as much as possible. If three or more copper wires are built in to transmit various signals, it is preferable to arrange the copper wires at an equidistant interval from each other.

9 is a view showing a connection portion of the control unit 11 according to an embodiment of the present invention. In this figure, the gas hose 12 is fixed to the means of the hose band to one end 41 of the gas pipe, and the copper wires 18a and 19b of the gas hose 12 are respectively connected to the terminals 10a and 10b so as to match the polarity. Connected.

The operation of the embodiment of the present invention is described as follows. When the starter switch 25 is pressed to operate the combustors 8a, 8b, 8c, a current is applied to the control unit 4. The current entered at this time is transmitted to the connection terminals 10a and 10b without flowing to the thermoelectric element due to the diodes 26a, 26b and 27c. On the copper wires 18 and 19 of the gas hose 12 connected with the connection terminals 10a and 10b, current flows to the wires 31 and 33 of the gas shutoff valve. Before the current is applied, due to the biasing force of the compression spring 36, the bar magnet 32 and the plunger 37 are moved to the left to the maximum to block the gas. When a current is applied to the solenoid 39 in this state, the bar magnet 32 and the plunger 37 move to the right by the magnetic field of the solenoid 39, and the gas is delivered to the gas hose 12.

When the combustor is operated to increase the temperature of the combustor, the current output from the thermoelectric elements 17a, 17b, and 17c enters the control unit 11 via the electric wire. The control unit 11 transmits the signal back to the gas shutoff valve 15 through the copper wires 18 and 19 of the gas hose 12 so that the gas shutoff valve 15 is kept open.

When the combustor is turned off, since the temperature of the combustor drops, no current is generated from the thermoelectric elements 17a, 17b, and 17c, so that the gas delivered to the gas shutoff valve 15 is blocked.

FIG. 10 shows an embodiment of the invention connected to a gas cylinder, unlike the embodiment of FIG. 3 connected to a gas pipe. In this embodiment, the gas cylinder 51 is connected to the gas hose 12 with the constant pressure 53 and the gas shutoff valve 15 interposed therebetween. As described above, the present invention can provide a gas valve shutoff device near the gas supply source and join it with a copper wire embedded in the gas hose, regardless of the type of the gas supply source.

According to the gas supply system of the present invention, the leakage of gas is blocked at the gas source side to prevent the fire or explosion accident that can occur due to the accumulation of gas in the room. In addition, since the copper wire is built in the gas hose, there is an advantage that can easily connect the gas use facility and the gas shutoff valve.

Claims (22)

A gas supply system for supplying gas to a gas use facility from a gas supply source disposed outside, the gas supply system comprising: a gas shutoff valve connected to an external gas supply source and configured to pass gas in accordance with an electrical signal; A gas hose, one end of which is connected to the gas shutoff valve and having one or more conductors embedded therein; And a gas use facility connected to the other end of the gas hose and outputting an electrical signal for operation of a combustor to a conductor of the gas hose. (1 time correction) The gas supply system according to claim 1, wherein the conductor of the gas hose is a copper wire, and the pair of copper wires are located opposite to the outer circumference of the gas hose and installed in parallel along the outer circumference of the gas hose. . 3. A gas supply system according to claim 2, wherein an indication for indicating the position of the conductor is provided on an outer surface of the gas hose. 2. The gas supply system according to claim 1, wherein the conductors of the gas hoses are disposed opposite to each other on the outer circumference of the gas hose and spirally installed on the outer circumference of the gas hose. The gas supply system of claim 1, wherein the combustor is provided with a sensor, the sensor providing a signal as to whether gas is combusting in the combustor. 6. The gas supply system as claimed in claim 5, wherein the sensor is an E-type thermoelectric element. The apparatus of claim 1, wherein the gas facility comprises a sensor attached to a combustor, a controller for processing an electrical signal, a wire for transmitting the signal of the sensor to the controller, and a start switch connected to the controller for starting the combustor. The control unit is provided with a reverse current prevention means for blocking the current in the reverse direction of the gas supply system The gas shutoff valve of claim 7, wherein the control unit includes an amplifier for amplifying an electric signal, and when the start switch is operated, an electric signal is transmitted to the gas shutoff valve through the gas hose to open a gas shutoff valve. Gas supply system. The gas shutoff valve according to claim 1, wherein the gas shutoff valve comprises: a solenoid forming a magnetic field according to the electrical signal, a magnetic rod cooperating with the solenoid, a plunger connected to the magnetic rod, the solenoid, the magnetic rod and A housing in which the plunger is built and a sheet having a shape corresponding to the plunger is formed on an inner surface thereof, and an elastic means for biasing the plunger so that the plunger is seated on the seat to close the valve when no electric signal is applied to the solenoid. Gas supply system characterized in that it comprises. 10. The gas supply system as claimed in claim 9, wherein the plunger moves along the centerline of the gas shutoff valve, and the magnetic rod is a permanent magnet. The gas supply system according to claim 1, wherein the gas use facility is a gas use facility selected from the group consisting of a gas range and a gas boiler. The gas supply system of claim 1, wherein a fuse is provided between the conductor of the gas hose and the gas facility. A method for preventing gas leakage in a gas using facility, the method comprising: transmitting a signal to a controller about whether a combustor provided in the gas using facility is operated; Processing the signal by the controller and transferring the signal to a gas hose in which a conductor is embedded; And opening and closing the gas delivered to the gas using facility based on the signal transmitted by the conductor. 14. The method of claim 13, wherein a signal is output when the combustor is in operation and no signal is output when the combustor is off. 15. The method of claim 14, wherein opening and closing the gas is accomplished by a gas shutoff valve with a solenoid in which the controller outputs a signal to a conductor of the gas hose when operating the combustor. (delete) (delete) (delete) (delete) (delete) (delete) (delete)